Non-recirculating rotary ball actuator

Details Non-recirculating rotary ball actuator Non-recirculating rotary ball actuator

1991-06-20

1993-01-12

Lorence, Richard

Machine element or mechanism

Gearing

Directly cooperating gears

74 8915, 74 99A, 92 31, F16H 5518

Patent

active

051780305

ABSTRACT:
A rotary ball actuator has a piston mounted within a body consisting of a first portion and a second portion. The piston has helical ramps which cooperate by means of first balls with helical ramps formed within the first portion, and rectilinear ramps which cooperate by means of second balls with rectilinear ramps formed within the second portion. The first balls and second balls are held respectively within first and second ball cages interposed between the piston and the body and controlled in dependence on the movement of the piston by means of a device comprising a stud and helical ramp. The two cages can be combined into one.

REFERENCES:
patent: 2739491 (1956-03-01), Russell
patent: 4643401 (1987-02-01), Benton
patent: 4691582 (1987-09-01), Weyer

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